Zinc Lysine Halide Complex Antiperspirant Composition
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Solution Overview
Problem
Conventional antiperspirant compositions based on aluminum or aluminum/zirconium salts face challenges in maintaining low molecular weights to effectively block sweat pores and provide antibacterial efficacy, as they tend to polymerize over time and are acidic, potentially irritating the skin.
Innovation Solution
A personal care composition featuring zinc X halide complexes, such as zinc lysine chloride, which solubilizes zinc salts to deliver them to the skin, blocking pores and providing antibacterial properties, is developed. These complexes are formed from zinc ion sources and amino acids or trimethylglycine, allowing for effective antiperspirant and deodorant action without excessive polymerization or acidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If aluminum or aluminum-zirconium salts are used as antiperspirant agents, then pore-blocking and antiperspirant effects are achieved, but the salts polymerize over time forming high molecular weight species that reduce effectiveness
Solution Approach 1:
The patent uses aluminum salts of fatty acids (such as aluminum stearate, aluminum palmitate) as intermediary compounds that form occlusive films on the skin surface. These fatty acid salts act as mediators between the aluminum core and the skin, providing pore-blocking effectiveness while preventing excessive polymerization of the aluminum salts, thereby maintaining stable molecular weights and prolonged antiperspirant effectiveness.
2Reliability
If conventional aluminum antiperspirant salts are used, then bacteriocidal and deodorant effects are provided through acidity, but skin irritation occurs
Solution Approach 1:
The patent changes the pH parameter of the antiperspirant composition by using aluminum salts of fatty acids, which have near-neutral pH compared to conventional acidic aluminum salts. This parameter change maintains the bacteriocidal and deodorant efficacy while significantly reducing skin irritation. The fatty acid component modulates the acidity, allowing effective odor control without the harsh effects of strong acids on the skin.
3Reliability
If higher amounts of antiperspirant salt are used to compensate for polymerization, then pore-blocking effect is maintained, but the composition becomes more irritating and less efficient
Solution Approach 1:
The fatty acid salts serve as intermediaries that enhance the pore-blocking effectiveness per unit of aluminum salt. By forming occlusive films that physically block sweat ducts, these intermediaries amplify the antiperspirant effect, allowing reduction of the overall aluminum salt quantity needed while maintaining or improving effectiveness and reducing irritation.
4Adaptability or versatility
If aluminum salts are used to provide both antiperspirant and deodorant benefits, then dual functionality is achieved, but the acidic nature causes skin irritation
Solution Approach 1:
The patent employs aluminum salts of fatty acids that simultaneously provide antiperspirant and deodorant functions in a single compound. The aluminum component provides pore-blocking antiperspirant action, while the fatty acid component provides bacteriocidal deodorant action and skin-conditioning properties. This multi-functional approach eliminates the need for separate acidic deodorant agents, reducing skin irritation while maintaining dual efficacy.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The zinc X halide complexes effectively reduce perspiration by blocking sweat ducts and kill bacteria, offering enhanced antiperspirant and deodorant performance while being less irritating to the skin due to their formation near neutral pH.
Implementation Method 1
The complex solubilizes the zinc salt to allow for its delivery to skin or hair from a personal care composition
Implementation Method 2
zinc salts can be delivered to pores to block the pores to reduce perspiration
Implementation Method 3
As the zinc X halide provides antibacterial properties, the invention also encompasses other personal care compositions for application to the skin
Data Source
AI summary
The invention provides a personal care composition for application to the skin which comprises a personal care composition for application to the skin or hair comprising a zinc X halide and a cosmetically acceptable base, wherein X is an amino acid or trimethylglycine. Methods of making and using the compositions are also provided. The zinc X halide is can be used to deliver zinc salts to block perspiration and provide antibacterial effects.